Apparatus for copying drawings, &amp;c.



PATENTED OCT. 4, 1904.

J. M. G. FULLMAN.

APPARATUS FOR COPYING DRAWINGS; &o.

APPLICATION FILED SEPT. 11, 1902.

2 SHBETPr-SHEET 1.

NO MODEL.

PATENTED OCT. 4, 1904.

J. M. G. FULLMAN. APPARATUS FOR COPYING DRAWINGS, &0.

APPLIOATION FILED SEPT. 11, 1902.

2 SHEETSSHEET 2- N0 MODEL.

.llliiilil'il Patented October 4;, 1904.

UNITED STATES PATENT OFFI E.

JAMES M. G. FULLMAN, OF PITTSBURG, PENNSYLVANIA.

APPARATUS FOR COPYING DRAWINGS, 80c.

SPECIFICATION forming part of Letters Patent No. 771,776, dated October 4, 1904.

Original application filed July 24, 1901, Serial No. 69,562. Divided and this application filed September 11, 1902. gerial To all whom, it may concern:

Be it known that 1, JAMES M. G. FULLMAN, a citizen of the United States, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Apparatus for Copying Drawings, &c., of which improvement the following is a specification, reference being had to the accompanying drawings, in which Figure 1 indicates a front elevation of my improved apparatus for copying or reproducing drawings, tracings, negatives, &c. Fig. 2 is a front elevation of the automatic gear. Fig. 3 is a section of the same, taken on line 111 of Fig. 2. Fig. 4 is a plan View of the same. Fig. 5 is a section taken through line a?) ofFig. 2. Fig. 6 is a section taken through line 0 (Z of Fig. 2. Fig. 7 is a section online 6 f of Fig. 2.

My present invention, which is a division of my copending application, Serial No. 69,562, filed July 2%, 1901, relates to apparatuses for copying or reproducing drawings, tracings, negatives, &c., and particularly to that class of such devices in which the copying or reproducing is obtained by electrically-produced light.

The objects of my invention are to produce for use in such devices an automatic gear by the use of which the descent of the arc-lamp into the cylinder is automatically controlled and regulated and to means to prevent or stop the movement of the gearing or escapement mechanism when the lamp is not in use; and to accomplish these objects my invention consists in the novel combination and arrangement of parts hereinafter more specifically set forth, reference being had to the accompanying drawings, in which like reference characters indicate like parts wherever they occur throughout the several views.

Referring to said drawings, 1 is a verticallydisposed glass cylinder comprising two segmental sections, the ends of which are secured in wooden blocks or holders on opposite sides of said cylinders and which extend the entire length thereof, the lower ends of said holders being secured in the revoluble base 2. The

block or holder at the upper end of said sections is secured together by bolts or in any other suitable manner. The cylinder is mounted on the base 2, which is provided with wheels adapted to travel on ways whereby said cylinder may be carried or caused to travel in a circular path.

3 is a board arranged at one side of the cylinder, upon which is arranged an automatic gear mechanism or clock-escapement A for automatically regulating the descent of the arclamp 5 into the cylinder. The said lamp is suspended upon cords 5, which pass over pulleys c, mounted in the outer and inner ends of the bracket 6. and under the counterweight 7, which is some what lighter than the arc-lamp, so as to permit the lamp to descend into the cylinder at a speed dependent on the adjustment of the pendulum-bob 8 of the automatic gear or cscapemcnt mechanism. The said pendulumbob is pivotally secured at its upper end at f upon the base-plate 9 of the automatic gear or escapement mechanism and is connected to an escapement or oscillating pallet 10 by means of the link 11. The said escapement or pallet is pivotally mounted upon the plate 9 and engages with the gear-wheel 12, which is mounted on the shaft 13, whereby movement is transmitted to said mechanism through the drum 14 as the cord is unwinding during the descent of the lamp. The said drum is detachably mounted on the shaft 13 and is provided with a crank or handle 15, whereby the same may be turned, wound up, or lowered. The gearing or escapement n1echanism may be held against movement by the latch lock or stop 16, which is capable of being withdrawn or thrown out of engagement or thrown into engagement therewith to admit of this. The tooth 17 of said latch lock or stop is adapted to engage with the gearwheel 12 to prevent movement of the escapement mechanism when the lamp is out of operation and when withdrawn or disengaged therefrom to permit movement of said mechanism when the lamp is descending into the cylinder and the pendulumbob is put in operation. The said pendulum-bob is adjustably secured upon the pendulum, whereby the The said cords Z) pass around i descent of the lamp or time thereof in descending into the cylinder may be varied,-'regulated, and controlled. The hub of the gear-wheel is provided with one or more orifices or holes 03, in which the pin 6, projecting from the hub of the drum, is adapted to engage, whereby the said gea'r-wheeland drum are detachably connected, whereby when it is desirable the drum may be disengaged from the gear-wheel by pulling it forward, thus releasingit from the pin and compressing the spring 18, mounted on the outer end of the shaft, which will permit the drum to be rotated Without actuating'the gear of the automatic gear mechanism. The retraction of the spring causes the pin 6 in the hub of the drum to again engage the orifices'in the gear-wheel, and the'm'ech- 'anis'm is again inoperative condition.

Thelower ends of thecords 6, which pass -'around the cou11terweigh-t-7,-"are connected-to the cord f, Which passes under the pulleylt),'

mounted inthe bracket 20, and -'is connected at its oppositee'nd to the "drumof the auto- 'ma'ti'c ge'ar mechanism, wher'eby'when said lamp descends into the cylinder the counter- }w'eightascends and the escapement-mechanism is operated, as heretofore stated.

Havin'g described I invention, What I claim, and desire to secure by-'Letters Patent,

1. 'In "an apparatus for 'copyin'g 'or 'repro- 'ducing drawings, the co'mbination'of an au- -tomatic gear mechanism 'for regulating and cont'rolling the descent of "the lamp comprising a pendulum with a'n adjustable bob' thereon, an escapement operativelyconnected with said p'endulu'm, a-gea'r adapted to"engage inte'rmitte'ntly with 'said escapement, a "drum mounted on the shaft on which thesaid gear is mounte'd;and'means to disengage said drum fr'om said gear.

Q. "In an apparatus for copying orreprotion of the said mechanism.

'4. A printing-drum, a lamp, a windingdrum, connections between the winding-drum and the lamp, an escapement mechanism for governing the speed of the winding-drum, said winding-drum and escapement being separable to permitthe free turning of the former.

'5. A printing-frame, a lamp, a windingdrum,'a pair of cords for suspending the lam p,

an escapement mechanism for governing the travel of the-lamp, and a weight, one of the cordsbeing connected tothe drum and the other, to the weight.

'6. A printing-frame'a lamp, a windingdrum, a pair'of cords for suspending the lamp,

an escapement mechanism for governing the travel of thelamp, and a weight, the drum being'separable from the escapement-Wheel to per'mitthe-free turning of theformer, one

or the cords being connected tothe drumand the other to the weight. g

In testimony whereofl have hereunto signed my namein the p'resence of two subscribing Witnesses.

' JAMES MJ-Gr. FULLMAN. In presence of CLARENCE A. WILLIAMS, JOHN H. RONEY. 

